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Your question doesn't really give detailed context to the situation and her sentence is ambiguous in general, but I can surmise that she means she wants you to send her the lyrics in Japanese. It's possible that she doesn't know they are lyrics and just wants to know what you are writing in English, or it's possible that she wants a translation. So in this context, 送って would mean to "give" a translation. You can think of it akin to "sending" e-mail which is why in Japanese they would use that word for electronic communication.